介绍一种VHF／UHF频段高性能超宽带线性调频信号源的设计与实现。首先简要阐述了高性能超宽带线性调频信号源的设计思想，然后依据基带数字产生结合倍频扩展带宽的思路提出了一种超宽带线性调频信号产生方案，并进行了设计实现研究。测试结果表明：按照本文阐述的指导思想和实现方案所设计的超宽带线性调频信号源达到 了相当高的性能。

In this paper, the design and implementation of a high performance ultra wideband LFM waveform generator at VHF/UHF band are introduced. The design ideas for a high performance ultra wideband LFM waveform generator are firstly described. Then, a generation scheme for ultra wideband LFM waveforms is presented according to the baseband digital generation method combining the bandwidth extension method via frequency doubling. An experimental system has been implemented and tested. The results show that the ultra wideband LFM waveform generator achieves very high performance.

TN957.51